[GHC] #10383: AArch64: get GHC Calling convention working

[GHC]

#10383: AArch64: get GHC Calling convention working
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        Reporter:  erikd                |                   Owner:  erikd
            Type:  feature request      |                  Status:  new
        Priority:  normal               |               Milestone:  8.0.1
       Component:  Compiler             |                 Version:  7.11
      Resolution:                       |                Keywords:
Operating System:  Unknown/Multiple     |            Architecture:  aarch64
 Type of failure:  Building GHC failed  |               Test Case:
      Blocked By:                       |                Blocking:
 Related Tickets:                       |  Differential Revisions:
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Comment (by erikd):

 Yes, the build always fails the first time it tries to use the `ghc-
 stage2` binary. In fact that binary will also fail the same way when
 building the most trivial "hello world" program.

 It fails in exactly the same way when run as `taskset 0x02 inplace/bin
 /ghc-stage2 hello.hs -o hello`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10383#comment:17>
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